Track whether a node or variable are likely to be a Smi value. Propagate that...

src/variables.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 67 matching lines @@
 
 #ifdef DEBUG
 void UseCount::Print() {
   // PrintF("r = %d, w = %d", nreads_, nwrites_);
   PrintF("%du = %dr + %dw", nuses(), nreads(), nwrites());
 }
 #endif
 
 
 // ----------------------------------------------------------------------------
+// Implementation StaticType.
+
+
+char* StaticType::Type2String(StaticType* type) {
+  switch (type->kind_) {
+    case UNKNOWN:
+      return "UNKNOWN";
+    case LIKELY_SMI:
+      return "LIKELY_SMI";
+    default:
+      UNREACHABLE();
+  }
+  return "UNREACHABLE";
+}
+
+
+// ----------------------------------------------------------------------------
 // Implementation Variable.
 
 
 const char* Variable::Mode2String(Mode mode) {
   switch (mode) {
     case VAR: return "VAR";
     case CONST: return "CONST";
     case DYNAMIC: return "DYNAMIC";
     case INTERNAL: return "INTERNAL";
     case TEMPORARY: return "TEMPORARY";
@@ skipping 36 matching lines @@
 
 
 bool Variable::is_global() const {
   // Temporaries are never global, they must always be allocated in the
   // activation frame.
   return mode_ != TEMPORARY && scope_ != NULL && scope_->is_global_scope();
 }
 
 
 } }  // namespace v8::internal